Introduction: Persistent oral bleeding in a child may be a sign of a bleeding disorder. The objective of this work is to describe the diagnostic and therapeutic aspects of hemophilia. Observation: We report the case of an 11-month-old male infant who had been admitted to the maxillofacial surgery department for persistent post-traumatic gingivorrhagia in a patient with no particular history. The clinical examination noted a wound with a layer of gingival bleeding, hematomas in the two upper limbs. Biological exploration revealed normochromic microcytic anemia at 6.5 g/dl; 97% prothrombin rate. The treatment consisted of gingival suture with tranexamic acid compression dressing, vitamin k injection and transfusion of 2 iso-group, iso-rhesus blood bags. The persistence of bleeding led to a search for coagulation factors, with factor VIII returning to less than 1%, concluding with the diagnosis of hemophilia A. Transfusion of an iso-group iso-rhesus blood bag to stop the bleeding. Transfer of the patient to the hematology department for specialized care. Discussion: Any unusual bleeding from the cephalic and bucco-facial sphere in an infant should raise the question of hemophilia. Conclusion: Stomatorrhagia is the evocative sign and the suture accompanied by blood transfusion a means of treatment.